Method and system for obtaining road grade data
US7035733B1 · kind B1 · utility
36Cited by
14References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2003 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Jun 20, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C5/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for collecting data for a geographic database is disclosed. Altitude data are collected using a vehicle traveling in a geographic region. A barometer associated with the vehicle supplies the altitude data. Road grade data along the roads traveled by the vehicle is derived by analyzing the altitude data. The geographic database is updated to indicate the road grade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.